Dinosaurs evolved from the archosaurs 232-234 Ma (million years ago) in the Ladinian age, the latter part of the Middle Triassic. Dinosauria is a well-supported clade, present in 98% of bootstraps. It is diagnosed by many features including loss of the postfrontal on the skull and an elongate deltopectoral crest on the humerus.
Identifier (URI) | Rank |
---|---|
dbkwik:resource/0qVeDaDQ2a7MixT5J2av1w== | 5.88129e-14 |
dbr:Evolution_of_dinosaurs | 5.88129e-14 |